oncedb-client - a node.js oncedb client

This is a complete Redis client for node.js. It supports all Redis commands, including many recently added commands like EVAL from experimental Redis server branches.

Install with:

npm install oncedb-client

Pieter Noordhuis has provided a binding to the official hiredis C library, which is non-blocking and fast. To use hiredis, do:

npm install hiredis oncedb-client

If hiredis is installed, node_redis will use it by default. Otherwise, a pure JavaScript parser will be used.

If you use hiredis, be sure to rebuild it whenever you upgrade your version of node. There are mysterious failures that can happen between node and native code modules after a node upgrade.

Usage

Simple example, included as examples/simple.js:

    var client = require("oncedb-client").createClient();

    // if you'd like to select database 3, instead of 0 (default), call
    // client.select(3, function() { /* ... */ });

    client.on("error", function (err) {
        console.log("Error " + err);
    });

    client.set("string key", "string val", oncedb.print);
    client.hset("hash key", "hashtest 1", "some value", oncedb.print);
    client.hset(["hash key", "hashtest 2", "some other value"], oncedb.print);
    client.hkeys("hash key", function (err, replies) {
        console.log(replies.length + " replies:");
        replies.forEach(function (reply, i) {
            console.log("    " + i + ": " + reply);
        });
        client.quit();
    });

This will display:

mjr:~/work/node_redis (master)$ node example.js
Reply: OK
Reply: 0
Reply: 0
2 replies:
    0: hashtest 1
    1: hashtest 2
mjr:~/work/node_redis (master)$

More

client.search('text*', '=', 'Kris', function(err, objs) {
  console.log(objs)
})

> [ 'text1', 'Kris' ] 

client.search('text*', '~', 'Kris', function(err, objs) {
  console.log(objs)
})

> [ 'text1', 'Kris', 'text5', 'This is ok, Kris' ]


client.hsearch('userInfo:*', {'nVisit': {'$gt': 300}}, function(err, objs) {
  console.log(objs)

})

client.hsearch('userInfo:*', {'nVisit': {'>': 300}}, function(err, objs) {
  console.log(objs)
})

 [ { _key: 'userInfo:1004', nVisit: '400' },
   { _key: 'userInfo:1005', nVisit: '10000' },
   { _key: 'userInfo:1006', nVisit: '10000' } ] }



client.hsearch('userInfo:*', {
    'name'     : '*'
  , 'gender'   : '*'
  , 'nVisit'   : {'>'  : '100'}
  , 'content'  : {'~|' : 'libs.min.js'}
}, function(err, objs) {
    console.log(objs)  
})

> [ { _key: 'userInfo:1006',
   name: 'Mar',
   gender: 'male',
   nVisit: '10000',
   content: ':0 0 60px 0"> <p style="float:left;line-height: 30px;"> 沪ICP备13020027号-2 </p> <p style="text-align           :right;"> <a class="btn" href="#top">返回顶部</a>  </p> </div> </div></div><script src="/js/libs.min.js"></script><scr           ipt src="/js/prod.min.js?v=219"></script><script>' } ]


client.hselect(['name'], ['userInfo:100'], function(err, objs) {
  console.log(objs)
})

> [ { _key: 'userInfo:100', name: 'shanghai' } ]



client.hselect(
    ['name', 'email', 'isPublic', 'nVisit']
  , ['userInfo:100', 'userInfo:103', 'userInfo:1005', 'userInfo:1006']
  , function(err, objs) {
    console.log(objs)
})

[ { _key: 'userInfo:100',
    name: 'shanghai',
    email: null,
    isPublic: null,
    nVisit: null },
{ _key: 'userInfo:103',
    name: 'newghost',
    email: null,
    isPublic: null,
    nVisit: null },
{ _key: 'userInfo:1005',
    name: 'Mars2',
    email: null,
    isPublic: '0',
    nVisit: '10000' },
{ _key: 'userInfo:1006',
    name: 'Mar',
    email: null,
    isPublic: '1',
    nVisit: '10000' } ]



client.hmgetall(['userInfo:100', 'userInfo:1003', 'userInfo:100'], function(err, objs) {
  console.log(objs)
})

> [ { _key: 'userInfo:100',
    id: '100',
    name: 'shanghai',
    gender: 'female',
    poster: '龙' },
  { _key: 'userInfo:1003',
    name: 'Telyer',
    id: '1003',
    gender: 'male',
    active: '0',
    joinTime: '1484445746020',
    poster: '王五',
    isPublic: '0',
    nVisit: '300' },
  { _key: 'userInfo:100',
    id: '100',
    name: 'shanghai',
    gender: 'female',
    poster: '龙' } ]

About

It's fork from https://github.com/NodeRedis/node_redis/tree/v0.12.1